Muffler for exhaust gases



May 4,1926. 1,583,095

J. B. PAYNE MUFFLER FOR EXHAUST GASES Filed July 14 1921 F/Q 3 f/GAZ INVEN TOR @W/M/MM/ A TTORNEY Patented May 4, 1926. I

UNITED STATES" PATENT OFFICE.-

JAMES B. PAYNE, OF SAN DIEGO, CALIFORNIA, ASSIGNOR OF GNE-HALF TO 1?. C.JOHNSON, OF SAN DIEGO, CALIFORNIA.

MUFFLER FOR EXHAUST GASES.

Appiication filed. July 14, 1921. Serial No. 484,624.

To all whom it may concern:

Be it known that I, JAMEs B. PAYNE, a

citizen of the United States, residing at San Die o, in the county ofSan Diego and State of .alifornia, have invented a certain new anduseful Mufller for Exhaust Gases, of which the following is aspecification.

My invention relates to mufllers for 'exhaust gases from internalcombustion engines and the objects of my invention are; First, toprovide a muflier for exhaust gases thatis so constructed that air isadmitted therein at intervals to fill the partial vacuum of the outgoingexhaust discharge and prevent reaction; second, to provide a muffler ofthis class in which there is no reaction of the exhaust gas toward theengine cylinders, therefore no retardation of the outflow of the gasfrom the engine; third, to provide a novelly constructed mufiier forexhaust gases; fourth, to provide means for cooling the muffler; fifth,to provide a muffler of this class which may be connected directlyto theengine cylinder, thus eliminating the necessity for an exhaust manifold;sixth, to provide a muffler of this class which reduces to a minimum thenoise and vibration usually caused by the exhaust mufller; seventh, toprovide a mufiier in which the exhaust from the engine is free,-thusproviding for thorough scavenging of the cylinders and eighth, toprovide a mufiier of this class which is very simple and economical ofconstruction, durable, easy to install, automatic mats action and whichwill not readily de teriorate or get out of order.

With these and other objects in view as will appear hereinafter, myinvention consists of certain novel features of construction,combination and arrangement of parts and portions as will be hereinafterdescribed in etail and particularly set forth in the appended clalms,reference being had to the 4 accompanying drawings and to the charactersof reference thereon which form a part of this application, in which:

Figure 1 is a side elevational view of my mufller in its preferred formshowing portions broken away and in section to facilitate theillustration, Fig. 2 is a sectional view through 22 of Fig. 1 on anenlarged scale, Fig. 3-is a longitudinal sectional view of the mufilerin a slightly modified form fromthat of Figs. 1 and 2 of the drawings,Flg. 4 is a transverse sectional view thereof,

Fig. 5 is a longitudinal sectional view of the same in another slightlymodified form and Fig 6 a transverse sectional view thereof.

Similar characters of reference refer to similar parts and portionsthroughout the several views of the drawings.

The main conductor tube 1 and air inlet tubes 2 constitute the principalparts and portions of my muffler.

The main conductor tube 1 is preferably cylindrical in form and hollowandmay be straight or curved in any shape as desired. It is provided atits extended end with reduced portions 1 and 1". It will be noted,however, that one reduced portion may be sufficient, dependent upon thelength of the tube 1 and upon the construction of the englue.

it will be noted that this tube 1 may be constructed in a single pieceor in sections as desired, it being noted that a continuous tube is allthat is necessary. Mounted in the wall of said tube at intervals,beginning near the gas exhaust inlet end thereof, are a plurality of airinlet tubes 2 which are preferably shaped as shown in the drawings. Theyare secured in the wall of the conductor tube 1 and their inner endsextend toward the outlet end of the conductor tube 1 while the outer endpreferably extends toward the inlet end of said conductor tube. However,it will be noted that this outer end may extend directly atright anglesto the conductor 1 or may be turned in the same direction as the innerend if desirable, it being noted, however, that the inner end shouldextend some distance toward the outlet end of said conductor tube 1.Theseextended portions may be extended centrally in the conductor tube 1and placed at intervals around said tube as shown best in Fig. 1 or maybe placed along one side andextend just inside said conductor tube 1along one side thereof, as shown best in Figs. 3 and 4 or may bepositioned near the wall and positioned around the tube at intervals asshown best in Figs. 5 and 6, it being noted that the principle involvedis that the inner portion of the tube 2 extends backwardly toward theoutlet end of the conductor tube 1 so that the exhaustgases in passingthe end of the tube tend to draw the fresh air through said conductor 2for filling the space caused by the movement of the exhaust gasoutwardly with the impulses of the engine. 'The reduced por- The portion1 is open at the end at 1.

tions 1 and 1 of the tube 1 provide means for contracting the exhaustgases at the end of said mufiler as they are gradually reduced Though Ihave shown and described a particular construction, combination andarrangement of parts and portions and certain modifications thereof, Ido not wish to be limited to this particular construction, combinationand arrangement, nor to the modifications as disclosed, but desire toinclude in the scope of my invention the construction, combination andarrangement substantially as set forth in the appended claims.

It is obvious that with this construction there is provided a mufflerfor exhaust gases for internal combustion engines in which the movementof the exhaust gases from the e-n gine cylinders will automatically drawin.

fresh air from the outside for relieving the vacuum behind the gas withthe different impulses of the engine and prevent reaction orback-actionof the gases against the outlet of the engine cylinders which will causea smooth-running engine without back pressure and will prevent noiseand'vibration of the muflier; that the mufller may be posttioneddirectly at the engine cylinder outlet; that the exhaust may bepositioned directly in connection with the exhaust port of the enginecylinder thus eliminating the necessity for an exhaust manifold ifdesired; that the vacuum between the gases caused by the lar member openfrom one end to the other 1 provided with graduated reduced sectionsnear its outlet end only, and a plurality of air inlet tubes open atboth ends positioned,

at intervals therein and extending through the wall thereof, the innerends of the air inlet tubes extending toward the outlet end of saidtubular member and the outer ends extending outwardly past the walls ofsaid tubular member, a short distance only.

2. In a mufiier for exhaust gases, a tubular member open from one end tothe other provided with graduated reduced sections near its outlet endonly, and 'a plurality of air inlet tubes open at both ends positionedat intervals therein and extendingthrough the wall thereof, the innerends of the air in.et tubes extending toward the outlet end of saidtubular member and the outer ends extending outwardly past the walls ofsaid tubular member a short distance only, some of said air inlet tubesbeing positioned in said reduced section and one in the extended 1 endof said tubular member, whereby freshv air is admitted to the interiorof said tubular member from the exterior throughout the full length ofsaid tubular member.

In testimony whereof, I have hereunto set I

